org.apache.commons.compress.archivers.zip
class FallbackZipEncoding extends java.lang.Object implements ZipEncoding
This implementation is not suitable for encodings other than utf-8, because java.io encodes unmappable character as question marks leading to unreadable ZIP entries on some operating systems.
Furthermore this implementation is unable to tell whether a given name can be safely encoded or not.
This implementation acts as a last resort implementation, when
neither Simple8BitZipEnoding
nor NioZipEncoding
is
available.
The methods of this class are reentrant.
Modifier and Type | Field and Description |
---|---|
private java.lang.String |
charset |
Constructor and Description |
---|
FallbackZipEncoding()
Construct a fallback zip encoding, which uses the platform's
default charset.
|
FallbackZipEncoding(java.lang.String charset)
Construct a fallback zip encoding, which uses the given charset.
|
Modifier and Type | Method and Description |
---|---|
boolean |
canEncode(java.lang.String name)
Check, whether the given string may be losslessly encoded using this
encoding.
|
java.lang.String |
decode(byte[] data) |
java.nio.ByteBuffer |
encode(java.lang.String name)
Encode a filename or a comment to a byte array suitable for
storing it to a serialized zip entry.
|
public FallbackZipEncoding()
public FallbackZipEncoding(java.lang.String charset)
charset
- The name of the charset or null
for
the platform's default character set.public boolean canEncode(java.lang.String name)
ZipEncoding
canEncode
in interface ZipEncoding
name
- A filename or ZIP comment.ZipEncoding.canEncode(java.lang.String)
public java.nio.ByteBuffer encode(java.lang.String name) throws java.io.IOException
ZipEncoding
Examples for CP 437 (in pseudo-notation, right hand side is C-style notation):
encode("?_for_Dollar.txt") = "%U20AC_for_Dollar.txt" encode("?lf?sser.txt") = "\231lf\204sser.txt"
encode
in interface ZipEncoding
name
- A filename or ZIP comment.%Uxxxx
. It is
assumed, that the byte buffer is positioned at the
beginning of the encoded result, the byte buffer has a
backing array and the limit of the byte buffer points
to the end of the encoded result.java.io.IOException
ZipEncoding.encode(java.lang.String)
public java.lang.String decode(byte[] data) throws java.io.IOException
decode
in interface ZipEncoding
data
- The byte values to decode.java.io.IOException
ZipEncoding.decode(byte[])